As if Joe Simpson stepping-out on his loving wife wasn't terrible enough in its own right?!

Jessica Simpson and her lovely fiancé Eric Johnson's Hawaiian vacation was RUINED by endless fighting over her Dad's immoral behavior!!

One source close to the family says:

“Jessica and Eric were constantly arguing about Joe during their stay in Hawaii."

Eric thinks it's time to move on, but Jessica doesn't know how to forgive him!!

The source continued:

“It’s something they can’t see eye-to-eye on, and it really spoiled the trip for a lot of family members who felt uncomfortable in their presence. Jessica… just doesn’t want anything to do with him right now. But Eric thinks she’s being too hard on Joe. In his eyes he’s a decent man who made a terrible mistake and should be given another chance… In what was supposed to be a relaxing time for the pair of them actually turned out to be more stressful."

Ugh! Papa Bear's selfish trysts with dudes are tearing the entire family apart!

The tension between Joe and the rest of the family is sooooo great that he rides his bike around the island by himself because nobody will talk to him!

Jessica and Eric need to be relaxing/wedding planning/prepping for baby #2 — the shouldn't be fighting!!